This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 12 |
| 3 | 32 |
| 4 | 64 |
| 5 | 128 |
| 6 | 240 |
| 7 | 448 |
| 8 | 768 |
| 9 | 1344 |
| 10 | 2304 |
| 11 | 4032 |
| 12 | 6720 |
| 13 | 10752 |
| 14 | 17280 |
| 15 | 26880 |
| 16 | 41472 |
| 17 | 64512 |
| 18 | 103680 |
| 19 | 161280 |
| 20 | 245760 |
| 21 | 368640 |
| 22 | 552960 |
| 23 | 860160 |
| 24 | 1290240 |
| 25 | 1966080 |
| 26 | 2764800 |
| 27 | 4128768 |
| 28 | 6193152 |
| 29 | 8957952 |
| 30 | 13271040 |
| 31 | 19660800 |
| 32 | 28311552 |
| 33 | 41287680 |
| 34 | 59719680 |
| 35 | 88473600 |
| 36 | 127401984 |
| 37 | 181665792 |
| 38 | 264241152 |
| 39 | 382205952 |
| 40 | 530841600 |